Question

Find sin 315 degree​

Answer 1

Answer:

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Step-by-step explanation:

(a) Since 315 degrees is between 270 degrees and 360 degress, then sin 315 is evaluated in the 4th quadrant, and there is 45 degrees between the terminal arm and the horizontal axis. In the 4th quadrant, sine is negative, so this means that sin 315 = -sin 45.

Answer 2

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(a) Since 315 degrees is between 270 degrees and 360 degress, then sin 315 is evaluated in the 4th quadrant, and there is 45 degrees between the terminal arm and the horizontal axis. In the 4th quadrant, sine is negative, so this means that sin 315 = -sin 45.